Effect of Laser Treated HVOF Coating on Ti-15 Alloy for Combating Oxidation on Gas Turbines at 700ï‚°C
Main Article Content
Abstract
Degradation by high temperature oxidation is one important failure mode of the components made from Ti alloys, used in hot sections of gas turbines. One possible way to overcome this problem is to use coatings, which can withstand oxidation environment at elevated temperatures. The present research work explores the possibility of use of HVOF sprayed cermet coatings on the materials used in gas turbine systems followed by laser heat treated on the coatings. Oxide alloy powder will be sprayed on titanium alloy (Ti-15) used in turbine related applications. Oxidation studies were conducted in an air at 700ï‚°C for 50 cycles by thermogravimetric method. It is followed by the investigation of their cyclic oxidation of the coating behaviour before and after laser heat treated is compared with un-coated substrate alloys by thermo gravimetric method. The reaction products of oxidized samples will be identified and gone through structural investigation made by means of X-ray diffractometer (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Analysis (EDAX) techniques.
Article Details
Issue
Section
Articles
Authors who publish with this journal agree to the following terms: a. Authors retain copyright and grant the journal right of first publication, with the work two years after publication simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).